answer: 75Ā°
step-by-step explanation:
ā esk is the supplement of ā edk, so is 100Ā°. ā esd = 1/2Ā·arc ed, so is 25Ā°.
since ā esk = ā esd + ā dsk
you have 100Ā° = 25Ā° + ā dsk . .
fill in known values 75Ā° = ā dsk . . . . .
subtract 25Ā°
step-by-step explanation: